Exhibit 99.1

GM Financial Automobile Leasing Trust 2018-3

3.81% Exchange Note

Class A-1 2.41515% Asset Backed Notes

Class A-2A 2.89% Asset Backed Notes

Class A-2B Floating Asset Backed Notes

Class A-3 3.18% Asset Backed Notes

Class A-4 3.30% Asset Backed Notes

Class B 3.48% Asset Backed Notes

Class C 3.70% Asset Backed Notes

Class D 3.80% Asset Backed Notes

Servicer’s Certificate

Beginning of Period:	07/01/20
End of Period:	07/31/20
Number of days in Interest Period (Actual/360):	31
Number of days in Collection Period:	31
Report Due Date:	08/18/20
Distribution Date:	08/20/20
Transaction Month:	23

					Original Agg.
2018-3 Designated Pool	Units		Start Date	Closing Date	Securitization Value
		56,655	08/01/2018	09/26/2018	$	1,362,465,324

Total		56,655			$	1,362,465,324

RECONCILIATION OF 2018-3 DESIGNATED POOL AGGREGATE SECURITIZATION VALUE

{1}

Beginning of period Aggregate Securitization Value

{1}

543,631,822

{2}

Reduction in Agg. Securitization Value due to payments

{2}

6,992,398

{3}

Reduction in Agg. Securitization Value due to Defaulted Leases

{3}

546,863

{4}

Reduction in Agg. Securitization Value due to early terminations, dealer buyouts, cancellations, repurchases

{4}

55,533,220

{5}

Other adjustments

{5}

{6}

Total change in Agg. Securitization Value

{6}

63,072,481

{7}

End of period Aggregate Securitization Value

{7}

480,559,341

{8}

Pool Factor

{8}

35.271308

RECONCILIATION OF 2018-3 EXCHANGE NOTE

{9}	Original Exchange Note Balance	{9}	$	1,295,000,000

{10}	Beginning of period Exchange Note Balance	{10}	$	476,166,498

{11}	Exchange Note Principal Payment Amount	{11}		63,072,481

{12}	End of period Exchange Note Balance	{12}	$	413,094,017

{13}	Note Pool Factor	{13}		31.899152	%

RECONCILIATION OF THE ASSET BACKED NOTES

			Class A-1			Class A-2A			Class A-2B			Class A-3			Class A-4
{14}	Original Note Balance	{14}	$	192,000,000		$	340,000,000		$	70,000,000		$	410,000,000		$	86,140,000

{15}	Beginning of period Note Balance	{15}	$	0		$	0		$	0		$	172,735,290		$	86,140,000

{16}	Noteholders’ Principal Distributable Amount	{16}		0			0			0			63,072,481			0
{17}	Noteholders’ Accelerated Principal Amount	{17}		0			0			0			0			0
{18}	Aggregate Principal Parity Amount	{18}		0			0			0			0			0
{19}	Matured Principal Shortfall	{19}		0			0			0			0			0

{20}	End of period Note Balance	{20}	$	0		$	0		$	0		$	109,662,809		$	86,140,000

{21}	Note Pool Factor	{21}		0.000000	%		0.000000	%		0.000000	%		26.747027	%		100.000000	%

			Class B			Class C			Class D			TOTAL
{22}	Original Note Balance	{22}	$	59,270,000		$	55,180,000		$	34,060,000		$	1,246,650,000

{23}	Beginning of period Note Balance	{23}	$	59,270,000		$	55,180,000		$	34,060,000		$	407,385,290

{24}	Noteholders’ Principal Distributable Amount	{24}		0			0			0			63,072,481
{25}	Noteholders’ Accelerated Principal Amount	{25}		0			0			0			0
{26}	Aggregate Principal Parity Amount	{26}		0			0			0			0
{27}	Matured Principal Shortfall	{27}		0			0			0			0

{28}	End of period Note Balance	{28}	$	59,270,000		$	55,180,000		$	34,060,000		$	344,312,809

{29}	Note Pool Factor	{29}		100.000000	%		100.000000	%		100.000000	%		27.619044	%

EXCHANGE NOTE MONTHLY PRINCIPAL PAYMENT AND INTEREST CALCULATIONS

Principal payment calculation:

{30}

Beginning of period Designated Pool Balance

{30}

543,631,822

{31}

Ending Designated Pool Balance

{31}

480,559,341

{32}

Unpaid prior Exchange Note Principal Payment Amount

{32}

{33}

Sum of {31} + {32}

{33}

480,559,341

{34}

Exchange Note Principal Payment Amount {30} - {33}

{34}

63,072,481

	Interest calculation:
		Beg Note Balance		Interest Carryover		Interest Rate			Days	Days Basis	Interest
{35}		$	476,166,498	$	0		3.81	%	30	30/360	$	1,511,829

RECONCILIATION OF EXCHANGE NOTE COLLECTION ACCOUNT

Additions:

{36}

2018-3 Designated Pool Collections (net of Liquidation Proceeds and fees)

{36}

9,658,669

{37}

Net Liquidation Proceeds collected during period

{37}

68,512,882

{38}

Investment Earnings

{38}

4,256

{39}

Investment Earnings - transferred to Indenture Note Collection Account

{39}

(4,256

)

{40}

Deposit from Servicer

{40}

{41}

Total Additions:

{41}

78,171,551

Distributions:

{42}

To the Servicer, Designated Pool Servicing Fee

{42}

453,027

{43}

To the 2018-3 Exchange Noteholder, the Exchange Note Interest Payment Amount

{43}

1,511,829

{44}

To the 2018-3 Exchange Noteholder, the Exchange Note Principal Payment Amount

{44}

63,072,481

{45}

To the 2018-3 Exchange Noteholder, any funds available to pay obligations pursuant to Indenture Section 8.3 (a)(i) through (xvii)

{45}

{46}

To the 2018-3 Exchange Noteholder, all remaining funds to be applied as Excess Exchange Note Payments

{46}

13,134,214

{47}

Total Distributions:

{47}

78,171,551

NOTEHOLDERS’ MONTHLY PRINCIPAL PAYMENT AND INTEREST CALCULATIONS

Noteholders’ Principal Distributable calculation:

{48}

Beginning Agg. Securitization Value

{48}

543,631,822

{49}

Ending Agg. Securitization Value

{49}

480,559,341

{50}

Principal Distributable Amount {48} - {49}

{50}

63,072,481

{51}

Noteholders’ Principal Carryover Amount

{51}

{52}

Principal Distributable Amount + Noteholders’ Principal Carryover Amount

{52}

63,072,481

{53}

Amount required to reduce Outstanding Amount after giving effect to distributions made pursuant to Indenture Section 8.3 (i) through (xiii) to the Required Pro Forma Note Balance

{53}

63,072,481

{54}

Noteholders’ Principal Distributable Amount Lessor of {52} and {53}

{54}

63,072,481

	Noteholders’ Interest Distributable calculation:
	Class	Beg Note Balance		Interest Carryover		Interest Rate			Days	Days Basis	Interest
{55}	Class A-1	$	0	$	0		2.42	%	31	Actual/360	$	0
{56}	Class A-2A	$	0		0		2.89	%	30	30/360		0
{57}	Class A-2B	$	0		0		0.35675	%	31	Actual/360		0
{58}	Class A-3	$	172,735,290		0		3.18	%	30	30/360		457,749
{59}	Class A-4	$	86,140,000		0		3.30	%	30	30/360		236,885
{60}	Class B	$	59,270,000		0		3.48	%	30	30/360		171,883
{61}	Class C	$	55,180,000		0		3.70	%	30	30/360		170,139
{62}	Class D	$	34,060,000		0		3.80	%	30	30/360		107,857

RECONCILIATION OF INDENTURE COLLECTION ACCOUNT

Available Funds:

{63}

2018-3 Exchange Note Collections

{63}

77,718,524

{64}

Investment Earnings

{64}

{65}

Investment Earnings - transferred from Exchange Note Collection Account

{65}

4,256

{66}

Investment Earnings - and amounts released from Reserve Account pursuant to Section 2.14(b)(ii) of Servicing Supplement

{66}

472

{67}

Optional Purchase Price

{67}

{68}

Indenture Section 5.4 disposition of Collateral

{68}

{69}

Available Funds:

{69}

77,723,252

{70}

Reserve Account Withdrawal Amount

{70}

{71}

Total Distributable Funds:

{71}

77,723,252

Distributions:

{72}

To the Successor Servicer, unpaid transition expenses, pro rata

{72}

{73}

To the Indenture Trustee, any accrued and unpaid fees & expenses, pro rata

{73}

417

{74}

To the Issuer Owner Trustee, any accrued and unpaid fees & expenses, pro rata

{74}

208

{75}

To the Asset Representations Reviewer, any accrued and unpaid fees & expenses, pro rata

{75}

{76}

Class A-1 Noteholders’ Interest Distributable Amount pari passu

{76}

{77}

Class A-2A Noteholders’ Interest Distributable Amount pari passu

{77}

{78}

Class A-2B Noteholders’ Interest Distributable Amount pari passu

{78}

{79}

Class A-3 Noteholders’ Interest Distributable Amount pari passu

{79}

457,749

{80}

Class A-4 Noteholders’ Interest Distributable Amount pari passu

{80}

236,885

{81}

Class A Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{81}

{82}

Class B Noteholders’ Interest Distributable Amount

{82}

171,883

{83}

Class B Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{83}

{84}

Class C Noteholders’ Interest Distributable Amount

{84}

170,139

{85}

Class C Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{85}

{86}

Class D Noteholders’ Interest Distributable Amount

{86}

107,857

{87}

Class D Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{87}

{88}

Noteholders’ Principal Distributable Amount

{88}

63,072,481

{89}

To the Reserve Account, the Reserve Amount Required Amount

{89}

{90}

To the Noteholders, the Accelerated Principal Amount (as calculated below)

{90}

{91}

To the Successor Servicer, any amounts in excess of the caps set forth, pro rata

{91}

{92}

To the Indenture Trustee, any amounts in excess of the caps set forth, pro rata

{92}

{93}

To the Asset Representations Reviewer, any amounts in excess of the caps set forth, pro rata

{93}

{94}

To the Issuer Owner Trustee, any amounts in excess of the caps set forth, pro rata

{94}

{95}

To the Issuer Trust Certificateholders, the aggregate amount remaining

{95}

13,505,633

{96}

Total Distributions:

{96}

77,723,252

PRINCIPAL PARITY AMOUNT CALCULATION

	Class	(X) Cumulative Note Balance		(Y) Aggregate Securitization Value		(I) Excess of (X) - (Y)		(II) Total Available Funds in Indenture Collection Account		Lesser of (I) or (II)
{97}	Class A	$	258,875,290	$	480,559,341	$	0	$	77,027,993	$	0
{98}	Class B		318,145,290		480,559,341		0		76,856,110		0
{99}	Class C		373,325,290		480,559,341		0		76,685,971		0
{100}	Class D		407,385,290		480,559,341		0		76,578,114		0

ACCELERATED PRINCIPAL AMOUNT CALCULATION

{101}

Excess Total Available Funds

{101}

13,505,633

{102}

Beginning Note Balance

{102}

407,385,290

{103}

Principal payments through Indenture Section 8.3 (a) (i) through (xv)

{103}

63,072,481

{104}

Pro-Forma Note Balance

{104}

344,312,809

{105}

Ending Aggregate Securitization Value

{105}

480,559,341

{106}

11% of Aggregate Securitization Value as of Cutoff until Class A-2 is paid in full,10% Thereafter ($136,246,532)

{106}

136,246,532

{107}

Required Pro Forma Note Balance {105} - {106}

{107}

344,312,809

{108}

Excess of Pro Forma Balance minus Required Pro Forma Balance {104} - {107}

{108}

{109}

Lesser of Excess Total Available Funds and Excess of Pro Forma Note Balance

{109}

OVERCOLLATERALIZATION CALCULATIONS

Exchange Note:

{110}

Ending Aggregate Securitization Value

{110}

480,559,341

{111}

End of Period Note Balance

{111}

413,094,017

{112}

Overcollateralization

{112}

67,465,324

{113}

Overcollateralization %

{113}

14.04

Asset Backed Notes:

{114}

Ending Aggregate Securitization Value

{114}

480,559,341

{115}

End of Period Note Balance

{115}

344,312,809

{116}

Overcollateralization

{116}

136,246,532

{117}

Overcollateralization %

{117}

28.35

RECONCILIATION OF 2018-3 CASH RESERVE ACCOUNT

{118}

Specified Reserve Balance

{118}

6,812,327

{119}

Beginning of Period Reserve Account balance

{119}

6,812,327

{120}

Investment Earnings

{120}

472

{121}

From the Indenture Collection Account, the Reserve Account Required Amount

{121}

{122}

To the Indenture Collection Account, the Reserve Account Withdrawal Amount

{122}

{123}

Total Reserve balance available:

{123}

6,812,799

{124}

Specified Reserve Balance

{124}

6,812,327

{125}

Release Excess Cash to Indenture Collection Available Funds

{125}

472

{126}

End of period Reserve Account balance

{126}

6,812,327

ASSET REPRESENTATIONS REVIEW DELINQUENCY TRIGGER

Dollars

Percentage

{127}

Receivables with Scheduled Payment delinquent 61 days or more

{127}

893,278

0.19

{128}

Compliance (Trigger Violation is a Delinquency Rate Greater Than 2.10%)

{128}

Yes

By:	/s/ Ellen Billings
Name:	Ellen Billings
Title:	Senior Vice President, Controller – North America
Date:	August 17, 2020

GM Financial

GMALT 2018-3

Supplemental Monthly Data

July 31, 2020

	Aggregate Securitization Value			Residual Value
Beginning of Period	$	543,631,822		$	498,183,089
Change		(63,072,481	)		(55,196,199	)
End of Period	$	480,559,341		$	442,986,890

Residual Value as % of Agg. Securitization Value					92.18	%

Delinquency

Leases with scheduled payment delinquent	Number of Leases		Agg. Securitization Value		Percentage⁽¹⁾
0 - 30 days		24,079		477,496,005		99.36	%
31 - 60 days		108		2,170,058		0.45	%
61 - 90 days		34		622,939		0.13	%
91 - 120 days		15		270,339		0.06	%
Total		24,236		480,559,341		100.00	%

Lease Terminations

	Current Period				Cumulative
	Number of Leases		Agg. Securitization Value		Number of Leases		Agg. Securitization Value
Retained vehicles by lessee
Early terminations		348		7,378,712		3,715		90,184,216
Standard terminations		296		5,656,656		1,985		37,681,419
Total retained by lessee		644		13,035,368		5,700		127,865,635
Returned Vehicles
Early terminations		1,114		19,231,834		13,812		244,237,855
Standard terminations		1,326		23,266,018		11,481		205,675,096
Total returned to dealer		2,440		42,497,852		25,293		449,912,951
Charged off leases / Repossessed vehicles		29		546,863		1,425		29,415,096
Repurchases		0		0		1		61,724
Other		0		0		0		0
Total terminations		3,113		56,080,083		32,419		607,255,406

Lease Extensions/Deferments

	Current Period
	Number of Leases		Agg. Securitization Value		Percentage

Term Extensions		360		5,914,832		1.09	%

Deferments		33		773,163		0.14	%

Net Credit (Gain) Loss

	Current Period			Cumulative
Agg. Securitized Value of early term defaults		546,863			29,415,096
less: Sales proceeds		564,618			29,904,778
less: Excess wear and excess mileage received		55			16,485
less: Other amounts received		-			0
Net Credit (Gain) Loss		(17,810	)		(506,167	)

Residual (Gain) Loss on Returned Vehicles

Agg. Securitized Value of returned vehicles sold by Servicer	42,215,666		446,298,605
add: Reimbursement of outstanding residual advance	N/A		N/A
less: Sales proceeds	52,123,499		495,879,227
less: Excess wear and excess mileage received	284,133		2,725,760
less: Other recovery amounts	-		0
Residual (Gain) Loss	(10,191,966	)	(52,306,382	)

	Current Period			Prev. Month
Prepay Speed		1.5227	%		1.3523	%

Return Rate based on Scheduled to Terminate⁽²⁾		101.9641	%		117.1171	%

Return Rate based on Terminated Leases⁽³⁾		78.3810	%		80.2469	%

(1) Percentages may not add to 100% due to rounding.

(2) Percentage of total number of vehicles returned to dealer over number of vehicles scheduled to terminate per month.

(3) Percentage of total number of vehicles returned to dealer over number of vehicles terminated per month.

GM Financial Automobile Leasing Trust 2018-3 10-D